<!DOCTYPE HTML>
<html>
<!--
-->
<head>
  <title>Test for computation of CSS 'inherit'</title>
  <script type="text/javascript" src="../mochitest-simplified/packed.js"></script>
  <script type="text/javascript" src="../mochitest-simplified/SimpleTest.js"></script>
  <script type="text/javascript" src="property_database.js"></script>
  <style type="text/css" id="stylesheet"></style>
  <link rel="stylesheet" type="text/css" href="../mochitest-simplified/test.css" />
</head>
<body>
<p id="display"><span id="fparent"><span id="fchild"></span></span></p>
<div id="content" style="display: none">

<div id="testnode"><span id="nparent"><span id="nchild"></span></span></div>
  
</div>
<pre id="test">
<script class="testbody" type="text/javascript">

/** Test for computation of CSS 'inherit' **/

// elements without a frame
var gNParent = document.getElementById("nparent");
var gNChild = document.getElementById("nchild");
// elements with a frame
var gFParent = document.getElementById("fparent");
var gFChild = document.getElementById("fchild");

var gStyleSheet = document.getElementById("stylesheet").sheet;
var gChildRule1 = gStyleSheet.cssRules[gStyleSheet.insertRule("#nchild, #fchild {}", gStyleSheet.cssRules.length)];
var gChildRule2 = gStyleSheet.cssRules[gStyleSheet.insertRule("#nchild, #fchild {}", gStyleSheet.cssRules.length)];
var gChildRule3 = gStyleSheet.cssRules[gStyleSheet.insertRule("#nchild.allother, #fchild.allother {}", gStyleSheet.cssRules.length)];
var gChildRuleTop = gStyleSheet.cssRules[gStyleSheet.insertRule("#nchild, #nchild.allother, #fchild, #fchild.allother {}", gStyleSheet.cssRules.length)];
var gParentRuleTop = gStyleSheet.cssRules[gStyleSheet.insertRule("#nparent, #fparent {}", gStyleSheet.cssRules.length)];

function get_computed_value_node(node, property)
{
  var cs = getComputedStyle(node, "");
  return get_computed_value(cs, property);
}

function test_property(property)
{
  var info = gCSSProperties[property];
  if (info.backend_only)
    return;

  if ("prerequisites" in info) {
    var prereqs = info.prerequisites;
    for (var prereq in prereqs) {
      gParentRuleTop.style.setProperty(prereq, prereqs[prereq], "");
      gChildRuleTop.style.setProperty(prereq, prereqs[prereq], "");
    }
  }

  if (info.inherited) {
    gParentRuleTop.style.setProperty(property, info.initial_values[0], "");
    var initial_computed_n = get_computed_value_node(gNChild, property);
    var initial_computed_f = get_computed_value_node(gFChild, property);
    gChildRule1.style.setProperty(property, info.other_values[0], "");
    var other_computed_n = get_computed_value_node(gNChild, property);
    var other_computed_f = get_computed_value_node(gFChild, property);
    isnot(other_computed_n, initial_computed_n,
          "should be testing with values that compute to different things " +
          "for '" + property + "'");
    isnot(other_computed_f, initial_computed_f,
          "should be testing with values that compute to different things " +
          "for '" + property + "'");
    gChildRule3.style.setProperty(property, "inherit", "");
    gFChild.className="allother";
    gNChild.className="allother";
    var inherit_initial_computed_n = get_computed_value_node(gNChild, property);
    var inherit_initial_computed_f = get_computed_value_node(gFChild, property);
    is(inherit_initial_computed_n, initial_computed_n,
       "inherit should cause inheritance of initial value for '" +
       property + "'");
    is(inherit_initial_computed_f, initial_computed_f,
       "inherit should cause inheritance of initial value for '" +
       property + "'");
    gParentRuleTop.style.setProperty(property, info.other_values[0], "");
    var inherit_other_computed_n = get_computed_value_node(gNChild, property);
    var inherit_other_computed_f = get_computed_value_node(gFChild, property);
    is(inherit_other_computed_n, other_computed_n,
       "inherit should cause inheritance of other value for '" +
       property + "'");
    is(inherit_other_computed_f, other_computed_f,
       "inherit should cause inheritance of other value for '" +
       property + "'");
    gParentRuleTop.style.removeProperty(property);
    gChildRule1.style.removeProperty(property);
    gChildRule3.style.setProperty(property, info.other_values[0], "");
    gFChild.className="";
    gNChild.className="";
  } else {
    gParentRuleTop.style.setProperty(property, info.other_values[0], "");
    var initial_computed_n = get_computed_value_node(gNChild, property);
    var initial_computed_f = get_computed_value_node(gFChild, property);
    var other_computed_n = get_computed_value_node(gNParent, property);
    var other_computed_f = get_computed_value_node(gFParent, property);
    isnot(other_computed_n, initial_computed_n,
          "should be testing with values that compute to different things " +
          "for '" + property + "'");
    isnot(other_computed_f, initial_computed_f,
          "should be testing with values that compute to different things " +
          "for '" + property + "'");
    gChildRule2.style.setProperty(property, "inherit", "");
    var inherit_other_computed_n = get_computed_value_node(gNChild, property);
    var inherit_other_computed_f = get_computed_value_node(gFChild, property);
    is(inherit_other_computed_n, other_computed_n,
       "inherit should cause inheritance of other value for '" +
       property + "'");
    is(inherit_other_computed_f, other_computed_f,
       "inherit should cause inheritance of other value for '" +
       property + "'");
    gParentRuleTop.style.removeProperty(property);
    gChildRule1.style.setProperty(property, info.other_values[0], "");
    var inherit_initial_computed_n = get_computed_value_node(gNChild, property);
    var inherit_initial_computed_f = get_computed_value_node(gFChild, property);
    is(inherit_initial_computed_n, initial_computed_n,
       "inherit should cause inheritance of initial value for '" +
       property + "'");
    is(inherit_initial_computed_f, initial_computed_f,
       "inherit should cause inheritance of initial value for '" +
       property + "'");
    gParentRuleTop.style.removeProperty(property);
    gChildRule1.style.removeProperty(property);
    gChildRule2.style.removeProperty(property);
  }

  if ("prerequisites" in info) {
    var prereqs = info.prerequisites;
    for (var prereq in prereqs) {
      gParentRuleTop.style.removeProperty(prereq);
      gChildRuleTop.style.removeProperty(prereq);
    }
  }
}

for (var prop in gCSSProperties) {
  var info = gCSSProperties[prop];
  gChildRule3.style.setProperty(prop, info.other_values[0], "");
}

for (var prop in gCSSProperties)
  test_property(prop);

</script>
</pre>
</body>
</html>
